<!DOCTYPE html>
<!--
To change this license header, choose License Headers in Project Properties.
To change this template file, choose Tools | Templates
and open the template in the editor.
-->
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <body>
       <?php
        // put your code here

        $n=20;//输出10列
        ?>

    <table width="900" border="1">
        <tbody>
            <tr>
                <?php
                for($i=1;$i<=$n;$i++)
                echo "<td>abc</td>"
                ?>
                <td>abc</td>
                 <td>abc</td>
                 <td>abc</td>
            </tr>
        </tbody>
    </table>
        <table width="900" border="1">
        <tbody>
            <tr>
                <?php
                for($i=1;$i<=$n;$i++)
                {
                    ?>
                <td>abc</td>
                <?php
                }
                ?>
                <td>abc</td>
                 <td>abc</td>
                 <td>abc</td>
            </tr>
        </tbody>
    </table>
    </body>
</html>
